drivers/staging/wlan-ng/cfg80211.c

   1 /* cfg80211 Interface for prism2_usb module */
   2
   3
   4 /* Prism2 channel/frequency/bitrate declarations */
   5 static const struct ieee80211_channel prism2_channels[] = {
   6         { .center_freq = 2412 },
   7         { .center_freq = 2417 },
   8         { .center_freq = 2422 },
   9         { .center_freq = 2427 },
  10         { .center_freq = 2432 },
  11         { .center_freq = 2437 },
  12         { .center_freq = 2442 },
  13         { .center_freq = 2447 },
  14         { .center_freq = 2452 },
  15         { .center_freq = 2457 },
  16         { .center_freq = 2462 },
  17         { .center_freq = 2467 },
  18         { .center_freq = 2472 },
  19         { .center_freq = 2484 },
  20 };
  21
  22 static const struct ieee80211_rate prism2_rates[] = {
  23         { .bitrate = 10 },
  24         { .bitrate = 20 },
  25         { .bitrate = 55 },
  26         { .bitrate = 110 }
  27 };
  28
  29 #define PRISM2_NUM_CIPHER_SUITES 2
  30 static const u32 prism2_cipher_suites[PRISM2_NUM_CIPHER_SUITES] = {
  31         WLAN_CIPHER_SUITE_WEP40,
  32         WLAN_CIPHER_SUITE_WEP104
  33 };
  34
  35
  36 /* prism2 device private data */
  37 struct prism2_wiphy_private {
  38         wlandevice_t *wlandev;
  39
  40         struct ieee80211_supported_band band;
  41         struct ieee80211_channel channels[ARRAY_SIZE(prism2_channels)];
  42         struct ieee80211_rate rates[ARRAY_SIZE(prism2_rates)];
  43
  44         struct cfg80211_scan_request *scan_request;
  45 };
  46
  47 static const void * const prism2_wiphy_privid = &prism2_wiphy_privid;
  48
  49
  50 /* Helper Functions */
  51 static int prism2_result2err(int prism2_result)
  52 {
  53         int err = 0;
  54
  55         switch (prism2_result) {
  56         case P80211ENUM_resultcode_invalid_parameters:
  57                 err = -EINVAL;
  58                 break;
  59         case P80211ENUM_resultcode_implementation_failure:
  60                 err = -EIO;
  61                 break;
  62         case P80211ENUM_resultcode_not_supported:
  63                 err = -EOPNOTSUPP;
  64                 break;
  65         default:
  66                 err = 0;
  67                 break;
  68         }
  69
  70         return err;
  71 }
  72
  73 static int prism2_domibset_uint32(wlandevice_t *wlandev, u32 did, u32 data)
  74 {
  75         struct p80211msg_dot11req_mibset msg;
  76         p80211item_uint32_t *mibitem = (p80211item_uint32_t *) &msg.mibattribute.data;
  77
  78         msg.msgcode = DIDmsg_dot11req_mibset;
  79         mibitem->did = did;
  80         mibitem->data = data;
  81
  82         return p80211req_dorequest(wlandev, (u8 *) &msg);
  83 }
  84
  85 static int prism2_domibset_pstr32(wlandevice_t *wlandev,
  86                                   u32 did, u8 len, u8 *data)
  87 {
  88         struct p80211msg_dot11req_mibset msg;
  89         p80211item_pstr32_t *mibitem = (p80211item_pstr32_t *) &msg.mibattribute.data;
  90
  91         msg.msgcode = DIDmsg_dot11req_mibset;
  92         mibitem->did = did;
  93         mibitem->data.len = len;
  94         memcpy(mibitem->data.data, data, len);
  95
  96         return p80211req_dorequest(wlandev, (u8 *) &msg);
  97 }
  98
  99
 100 /* The interface functions, called by the cfg80211 layer */
 101 int prism2_change_virtual_intf(struct wiphy *wiphy,
 102                                struct net_device *dev,
 103                                enum nl80211_iftype type, u32 *flags,
 104                                struct vif_params *params)
 105 {
 106         wlandevice_t *wlandev = dev->ml_priv;
 107         u32 data;
 108         int result;
 109         int err = 0;
 110
 111         switch (type) {
 112         case NL80211_IFTYPE_ADHOC:
 113                 if (wlandev->macmode == WLAN_MACMODE_IBSS_STA)
 114                         goto exit;
 115                 wlandev->macmode = WLAN_MACMODE_IBSS_STA;
 116                 data = 0;
 117                 break;
 118         case NL80211_IFTYPE_STATION:
 119                 if (wlandev->macmode == WLAN_MACMODE_ESS_STA)
 120                         goto exit;
 121                 wlandev->macmode = WLAN_MACMODE_ESS_STA;
 122                 data = 1;
 123                 break;
 124         default:
 125                 printk(KERN_WARNING "Operation mode: %d not support\n", type);
 126                 return -EOPNOTSUPP;
 127         }
 128
 129         /* Set Operation mode to the PORT TYPE RID */
 130         result = prism2_domibset_uint32(wlandev,
 131                                         DIDmib_p2_p2Static_p2CnfPortType,
 132                                         data);
 133
 134         if (result)
 135                 err = -EFAULT;
 136
 137         dev->ieee80211_ptr->iftype = type;
 138
 139 exit:
 140         return err;
 141 }
 142
 143 int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
 144                    u8 key_index, bool pairwise, const u8 *mac_addr,
 145                    struct key_params *params)
 146 {
 147         wlandevice_t *wlandev = dev->ml_priv;
 148         u32 did;
 149
 150         int err = 0;
 151         int result = 0;
 152
 153         switch (params->cipher) {
 154         case WLAN_CIPHER_SUITE_WEP40:
 155         case WLAN_CIPHER_SUITE_WEP104:
 156                 result = prism2_domibset_uint32(wlandev,
 157                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 158                                                 key_index);
 159                 if (result)
 160                         goto exit;
 161
 162                 /* send key to driver */
 163                 switch (key_index) {
 164                 case 0:
 165                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 166                         break;
 167
 168                 case 1:
 169                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 170                         break;
 171
 172                 case 2:
 173                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 174                         break;
 175
 176                 case 3:
 177                         did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 178                         break;
 179
 180                 default:
 181                         err = -EINVAL;
 182                         goto exit;
 183                 }
 184
 185                 result = prism2_domibset_pstr32(wlandev, did, params->key_len, params->key);
 186                 if (result)
 187                         goto exit;
 188                 break;
 189
 190         default:
 191                 pr_debug("Unsupported cipher suite\n");
 192                 result = 1;
 193         }
 194
 195 exit:
 196         if (result)
 197                 err = -EFAULT;
 198
 199         return err;
 200 }
 201
 202 int prism2_get_key(struct wiphy *wiphy, struct net_device *dev,
 203                    u8 key_index, bool pairwise, const u8 *mac_addr, void *cookie,
 204                    void (*callback)(void *cookie, struct key_params*))
 205 {
 206         wlandevice_t *wlandev = dev->ml_priv;
 207         struct key_params params;
 208         int len;
 209
 210         if (key_index >= NUM_WEPKEYS)
 211                 return -EINVAL;
 212
 213         len = wlandev->wep_keylens[key_index];
 214         memset(&params, 0, sizeof(params));
 215
 216         if (len == 13)
 217                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 218         else if (len == 5)
 219                 params.cipher = WLAN_CIPHER_SUITE_WEP104;
 220         else
 221                 return -ENOENT;
 222         params.key_len = len;
 223         params.key = wlandev->wep_keys[key_index];
 224         params.seq_len = 0;
 225
 226         callback(cookie, &params);
 227
 228         return 0;
 229 }
 230
 231 int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
 232                    u8 key_index, bool pairwise, const u8 *mac_addr)
 233 {
 234         wlandevice_t *wlandev = dev->ml_priv;
 235         u32 did;
 236         int err = 0;
 237         int result = 0;
 238
 239         /* There is no direct way in the hardware (AFAIK) of removing
 240            a key, so we will cheat by setting the key to a bogus value */
 241         /* send key to driver */
 242         switch (key_index) {
 243         case 0:
 244                 did =
 245                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 246                 break;
 247
 248         case 1:
 249                 did =
 250                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 251                 break;
 252
 253         case 2:
 254                 did =
 255                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 256                 break;
 257
 258         case 3:
 259                 did =
 260                     DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 261                 break;
 262
 263         default:
 264                 err = -EINVAL;
 265                 goto exit;
 266         }
 267
 268         result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");
 269
 270 exit:
 271         if (result)
 272                 err = -EFAULT;
 273
 274         return err;
 275 }
 276
 277 int prism2_set_default_key(struct wiphy *wiphy, struct net_device *dev,
 278                            u8 key_index, bool unicast, bool multicast)
 279 {
 280         wlandevice_t *wlandev = dev->ml_priv;
 281
 282         int err = 0;
 283         int result = 0;
 284
 285         result = prism2_domibset_uint32(wlandev,
 286                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 287                 key_index);
 288
 289         if (result)
 290                 err = -EFAULT;
 291
 292         return err;
 293 }
 294
 295
 296 int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
 297                        u8 *mac, struct station_info *sinfo)
 298 {
 299         wlandevice_t *wlandev = dev->ml_priv;
 300         struct p80211msg_lnxreq_commsquality quality;
 301         int result;
 302
 303         memset(sinfo, 0, sizeof(*sinfo));
 304
 305         if ((wlandev == NULL) || (wlandev->msdstate != WLAN_MSD_RUNNING))
 306                 return -EOPNOTSUPP;
 307
 308         /* build request message */
 309         quality.msgcode = DIDmsg_lnxreq_commsquality;
 310         quality.dbm.data = P80211ENUM_truth_true;
 311         quality.dbm.status = P80211ENUM_msgitem_status_data_ok;
 312
 313         /* send message to nsd */
 314         if (wlandev->mlmerequest == NULL)
 315                 return -EOPNOTSUPP;
 316
 317         result = wlandev->mlmerequest(wlandev, (struct p80211msg *) &quality);
 318
 319
 320         if (result == 0) {
 321                 sinfo->txrate.legacy = quality.txrate.data;
 322                 sinfo->filled |= STATION_INFO_TX_BITRATE;
 323                 sinfo->signal = quality.level.data;
 324                 sinfo->filled |= STATION_INFO_SIGNAL;
 325         }
 326
 327         return result;
 328 }
 329
 330 int prism2_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
 331 {
 332         struct net_device *dev;
 333         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 334         wlandevice_t *wlandev;
 335         struct p80211msg_dot11req_scan msg1;
 336         struct p80211msg_dot11req_scan_results msg2;
 337         struct cfg80211_bss *bss;
 338         int result;
 339         int err = 0;
 340         int numbss = 0;
 341         int i = 0;
 342         u8 ie_buf[46];
 343         int ie_len;
 344
 345         if (!request)
 346                 return -EINVAL;
 347
 348         dev = request->wdev->netdev;
 349         wlandev = dev->ml_priv;
 350
 351         if (priv->scan_request && priv->scan_request != request)
 352                 return -EBUSY;
 353
 354         if (wlandev->macmode == WLAN_MACMODE_ESS_AP) {
 355                 printk(KERN_ERR "Can't scan in AP mode\n");
 356                 return -EOPNOTSUPP;
 357         }
 358
 359         priv->scan_request = request;
 360
 361         memset(&msg1, 0x00, sizeof(struct p80211msg_dot11req_scan));
 362         msg1.msgcode = DIDmsg_dot11req_scan;
 363         msg1.bsstype.data = P80211ENUM_bsstype_any;
 364
 365         memset(&msg1.bssid.data.data, 0xFF, sizeof(msg1.bssid.data.data));
 366         msg1.bssid.data.len = 6;
 367
 368         if (request->n_ssids > 0) {
 369                 msg1.scantype.data = P80211ENUM_scantype_active;
 370                 msg1.ssid.data.len = request->ssids->ssid_len;
 371                 memcpy(msg1.ssid.data.data,
 372                         request->ssids->ssid, request->ssids->ssid_len);
 373         } else {
 374                 msg1.scantype.data = 0;
 375         }
 376         msg1.probedelay.data = 0;
 377
 378         for (i = 0;
 379                 (i < request->n_channels) && i < ARRAY_SIZE(prism2_channels);
 380                 i++)
 381                 msg1.channellist.data.data[i] =
 382                         ieee80211_frequency_to_channel(request->channels[i]->center_freq);
 383         msg1.channellist.data.len = request->n_channels;
 384
 385         msg1.maxchanneltime.data = 250;
 386         msg1.minchanneltime.data = 200;
 387
 388         result = p80211req_dorequest(wlandev, (u8 *) &msg1);
 389         if (result) {
 390                 err = prism2_result2err(msg1.resultcode.data);
 391                 goto exit;
 392         }
 393         /* Now retrieve scan results */
 394         numbss = msg1.numbss.data;
 395
 396         for (i = 0; i < numbss; i++) {
 397                 memset(&msg2, 0, sizeof(msg2));
 398                 msg2.msgcode = DIDmsg_dot11req_scan_results;
 399                 msg2.bssindex.data = i;
 400
 401                 result = p80211req_dorequest(wlandev, (u8 *) &msg2);
 402                 if ((result != 0) ||
 403                     (msg2.resultcode.data != P80211ENUM_resultcode_success)) {
 404                         break;
 405                 }
 406
 407                 ie_buf[0] = WLAN_EID_SSID;
 408                 ie_buf[1] = msg2.ssid.data.len;
 409                 ie_len = ie_buf[1] + 2;
 410                 memcpy(&ie_buf[2], &(msg2.ssid.data.data), msg2.ssid.data.len);
 411                 bss = cfg80211_inform_bss(wiphy,
 412                         ieee80211_get_channel(wiphy, ieee80211_dsss_chan_to_freq(msg2.dschannel.data)),
 413                         (const u8 *) &(msg2.bssid.data.data),
 414                         msg2.timestamp.data, msg2.capinfo.data,
 415                         msg2.beaconperiod.data,
 416                         ie_buf,
 417                         ie_len,
 418                         (msg2.signal.data - 65536) * 100, /* Conversion to signed type */
 419                         GFP_KERNEL
 420                 );
 421
 422                 if (!bss) {
 423                         err = -ENOMEM;
 424                         goto exit;
 425                 }
 426
 427                 cfg80211_put_bss(wiphy, bss);
 428         }
 429
 430         if (result)
 431                 err = prism2_result2err(msg2.resultcode.data);
 432
 433 exit:
 434         cfg80211_scan_done(request, err ? 1 : 0);
 435         priv->scan_request = NULL;
 436         return err;
 437 }
 438
 439 int prism2_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 440 {
 441         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 442         wlandevice_t *wlandev = priv->wlandev;
 443         u32 data;
 444         int result;
 445         int err = 0;
 446
 447         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
 448                 if (wiphy->rts_threshold == -1)
 449                         data = 2347;
 450                 else
 451                         data = wiphy->rts_threshold;
 452
 453                 result = prism2_domibset_uint32(wlandev,
 454                                                 DIDmib_dot11mac_dot11OperationTable_dot11RTSThreshold,
 455                                                 data);
 456                 if (result) {
 457                         err = -EFAULT;
 458                         goto exit;
 459                 }
 460         }
 461
 462         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
 463                 if (wiphy->frag_threshold == -1)
 464                         data = 2346;
 465                 else
 466                         data = wiphy->frag_threshold;
 467
 468                 result = prism2_domibset_uint32(wlandev,
 469                                                 DIDmib_dot11mac_dot11OperationTable_dot11FragmentationThreshold,
 470                                                 data);
 471                 if (result) {
 472                         err = -EFAULT;
 473                         goto exit;
 474                 }
 475         }
 476
 477 exit:
 478         return err;
 479 }
 480
 481 int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
 482                    struct cfg80211_connect_params *sme)
 483 {
 484         wlandevice_t *wlandev = dev->ml_priv;
 485         struct ieee80211_channel *channel = sme->channel;
 486         struct p80211msg_lnxreq_autojoin msg_join;
 487         u32 did;
 488         int length = sme->ssid_len;
 489         int chan = -1;
 490         int is_wep = (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP40) ||
 491             (sme->crypto.cipher_group == WLAN_CIPHER_SUITE_WEP104);
 492         int result;
 493         int err = 0;
 494
 495         /* Set the channel */
 496         if (channel) {
 497                 chan = ieee80211_frequency_to_channel(channel->center_freq);
 498                 result = prism2_domibset_uint32(wlandev,
 499                                                 DIDmib_dot11phy_dot11PhyDSSSTable_dot11CurrentChannel,
 500                                                 chan);
 501                 if (result)
 502                         goto exit;
 503         }
 504
 505         /* Set the authorization */
 506         if ((sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM) ||
 507                 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && !is_wep))
 508                         msg_join.authtype.data = P80211ENUM_authalg_opensystem;
 509         else if ((sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY) ||
 510                 ((sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) && is_wep))
 511                         msg_join.authtype.data = P80211ENUM_authalg_sharedkey;
 512         else
 513                 printk(KERN_WARNING
 514                         "Unhandled authorisation type for connect (%d)\n",
 515                         sme->auth_type);
 516
 517         /* Set the encryption - we only support wep */
 518         if (is_wep) {
 519                 if (sme->key) {
 520                         result = prism2_domibset_uint32(wlandev,
 521                                 DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
 522                                 sme->key_idx);
 523                         if (result)
 524                                 goto exit;
 525
 526                         /* send key to driver */
 527                         switch (sme->key_idx) {
 528                         case 0:
 529                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
 530                                 break;
 531
 532                         case 1:
 533                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
 534                                 break;
 535
 536                         case 2:
 537                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
 538                                 break;
 539
 540                         case 3:
 541                                 did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
 542                                 break;
 543
 544                         default:
 545                                 err = -EINVAL;
 546                                 goto exit;
 547                         }
 548
 549                         result = prism2_domibset_pstr32(wlandev,
 550                                                         did, sme->key_len,
 551                                                         (u8 *)sme->key);
 552                         if (result)
 553                                 goto exit;
 554
 555                 }
 556
 557                 /* Assume we should set privacy invoked and exclude unencrypted
 558                    We could possibly use sme->privacy here, but the assumption
 559                    seems reasonable anyway */
 560                 result = prism2_domibset_uint32(wlandev,
 561                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 562                                                 P80211ENUM_truth_true);
 563                 if (result)
 564                         goto exit;
 565
 566                 result = prism2_domibset_uint32(wlandev,
 567                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 568                                                 P80211ENUM_truth_true);
 569                 if (result)
 570                         goto exit;
 571
 572         } else {
 573                 /* Assume we should unset privacy invoked
 574                    and exclude unencrypted */
 575                 result = prism2_domibset_uint32(wlandev,
 576                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11PrivacyInvoked,
 577                                                 P80211ENUM_truth_false);
 578                 if (result)
 579                         goto exit;
 580
 581                 result = prism2_domibset_uint32(wlandev,
 582                                                 DIDmib_dot11smt_dot11PrivacyTable_dot11ExcludeUnencrypted,
 583                                                 P80211ENUM_truth_false);
 584                 if (result)
 585                         goto exit;
 586
 587         }
 588
 589         /* Now do the actual join. Note there is no way that I can
 590            see to request a specific bssid */
 591         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 592
 593         memcpy(msg_join.ssid.data.data, sme->ssid, length);
 594         msg_join.ssid.data.len = length;
 595
 596         result = p80211req_dorequest(wlandev, (u8 *) &msg_join);
 597
 598 exit:
 599         if (result)
 600                 err = -EFAULT;
 601
 602         return err;
 603 }
 604
 605 int prism2_disconnect(struct wiphy *wiphy, struct net_device *dev,
 606                       u16 reason_code)
 607 {
 608         wlandevice_t *wlandev = dev->ml_priv;
 609         struct p80211msg_lnxreq_autojoin msg_join;
 610         int result;
 611         int err = 0;
 612
 613
 614         /* Do a join, with a bogus ssid. Thats the only way I can think of */
 615         msg_join.msgcode = DIDmsg_lnxreq_autojoin;
 616
 617         memcpy(msg_join.ssid.data.data, "---", 3);
 618         msg_join.ssid.data.len = 3;
 619
 620         result = p80211req_dorequest(wlandev, (u8 *) &msg_join);
 621
 622         if (result)
 623                 err = -EFAULT;
 624
 625         return err;
 626 }
 627
 628
 629 int prism2_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 630                      struct cfg80211_ibss_params *params)
 631 {
 632         return -EOPNOTSUPP;
 633 }
 634
 635 int prism2_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 636 {
 637         return -EOPNOTSUPP;
 638 }
 639
 640
 641 int prism2_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 642                         enum nl80211_tx_power_setting type, int mbm)
 643 {
 644         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 645         wlandevice_t *wlandev = priv->wlandev;
 646         u32 data;
 647         int result;
 648         int err = 0;
 649
 650         if (type == NL80211_TX_POWER_AUTOMATIC)
 651                 data = 30;
 652         else
 653                 data = MBM_TO_DBM(mbm);
 654
 655         result = prism2_domibset_uint32(wlandev,
 656                 DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel,
 657                 data);
 658
 659         if (result) {
 660                 err = -EFAULT;
 661                 goto exit;
 662         }
 663
 664 exit:
 665         return err;
 666 }
 667
 668 int prism2_get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
 669                         int *dbm)
 670 {
 671         struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
 672         wlandevice_t *wlandev = priv->wlandev;
 673         struct p80211msg_dot11req_mibget msg;
 674         p80211item_uint32_t *mibitem;
 675         int result;
 676         int err = 0;
 677
 678         mibitem = (p80211item_uint32_t *) &msg.mibattribute.data;
 679         msg.msgcode = DIDmsg_dot11req_mibget;
 680         mibitem->did =
 681             DIDmib_dot11phy_dot11PhyTxPowerTable_dot11CurrentTxPowerLevel;
 682
 683         result = p80211req_dorequest(wlandev, (u8 *) &msg);
 684
 685         if (result) {
 686                 err = -EFAULT;
 687                 goto exit;
 688         }
 689
 690         *dbm = mibitem->data;
 691
 692 exit:
 693         return err;
 694 }
 695
 696
 697
 698
 699 /* Interface callback functions, passing data back up to the cfg80211 layer */
 700 void prism2_connect_result(wlandevice_t *wlandev, u8 failed)
 701 {
 702         u16 status = failed ?
 703                      WLAN_STATUS_UNSPECIFIED_FAILURE : WLAN_STATUS_SUCCESS;
 704
 705         cfg80211_connect_result(wlandev->netdev, wlandev->bssid,
 706                                 NULL, 0, NULL, 0, status, GFP_KERNEL);
 707 }
 708
 709 void prism2_disconnected(wlandevice_t *wlandev)
 710 {
 711         cfg80211_disconnected(wlandev->netdev, 0, NULL,
 712                 0, GFP_KERNEL);
 713 }
 714
 715 void prism2_roamed(wlandevice_t *wlandev)
 716 {
 717         cfg80211_roamed(wlandev->netdev, NULL, wlandev->bssid,
 718                 NULL, 0, NULL, 0, GFP_KERNEL);
 719 }
 720
 721
 722 /* Structures for declaring wiphy interface */
 723 static const struct cfg80211_ops prism2_usb_cfg_ops = {
 724         .change_virtual_intf = prism2_change_virtual_intf,
 725         .add_key = prism2_add_key,
 726         .get_key = prism2_get_key,
 727         .del_key = prism2_del_key,
 728         .set_default_key = prism2_set_default_key,
 729         .get_station = prism2_get_station,
 730         .scan = prism2_scan,
 731         .set_wiphy_params = prism2_set_wiphy_params,
 732         .connect = prism2_connect,
 733         .disconnect = prism2_disconnect,
 734         .join_ibss = prism2_join_ibss,
 735         .leave_ibss = prism2_leave_ibss,
 736         .set_tx_power = prism2_set_tx_power,
 737         .get_tx_power = prism2_get_tx_power,
 738 };
 739
 740
 741 /* Functions to create/free wiphy interface */
 742 struct wiphy *wlan_create_wiphy(struct device *dev, wlandevice_t *wlandev)
 743 {
 744         struct wiphy *wiphy;
 745         struct prism2_wiphy_private *priv;
 746
 747         wiphy = wiphy_new(&prism2_usb_cfg_ops, sizeof(*priv));
 748         if (!wiphy)
 749                 return NULL;
 750
 751         priv = wiphy_priv(wiphy);
 752         priv->wlandev = wlandev;
 753         memcpy(priv->channels, prism2_channels, sizeof(prism2_channels));
 754         memcpy(priv->rates, prism2_rates, sizeof(prism2_rates));
 755         priv->band.channels = priv->channels;
 756         priv->band.n_channels = ARRAY_SIZE(prism2_channels);
 757         priv->band.bitrates = priv->rates;
 758         priv->band.n_bitrates = ARRAY_SIZE(prism2_rates);
 759         priv->band.band = IEEE80211_BAND_2GHZ;
 760         priv->band.ht_cap.ht_supported = false;
 761         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 762
 763         set_wiphy_dev(wiphy, dev);
 764         wiphy->privid = prism2_wiphy_privid;
 765         wiphy->max_scan_ssids = 1;
 766         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
 767                                  | BIT(NL80211_IFTYPE_ADHOC);
 768         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 769         wiphy->n_cipher_suites = PRISM2_NUM_CIPHER_SUITES;
 770         wiphy->cipher_suites = prism2_cipher_suites;
 771
 772         if (wiphy_register(wiphy) < 0)
 773                 return NULL;
 774
 775         return wiphy;
 776 }
 777
 778
 779 void wlan_free_wiphy(struct wiphy *wiphy)
 780 {
 781         wiphy_unregister(wiphy);
 782         wiphy_free(wiphy);
 783 }